It may be illegal in Japan. I'm not familiar with their laws. It's not in most U.S. states (laws vary location to location, yadda yadda.) > you're trespassin

It may be illegal in Japan. I'm not familiar with their laws. It's not in most U.S. states (laws vary location to location, yadda yadda.) > you're trespassing. Only if they come back after being told not to. > It is also probably public nuisance and disturbance of the peace These can somewhat statutorily vague, but the conduct here does not seem to match either of those (from Wikipedia): > In English criminal law, public nuisance is a class of common law offence in which the injury, loss or damage is suffered by the local community as a whole rather than by individual victims. The primary loss is WalMart's, and it is of hypothetical sales, of which there is no property right. > Disturbing the peace is a crime generally defined as the unsettling of proper order in a public space through one's actions. This can include creating loud noise by fighting or challenging to fight, disturbing others by loud and unreasonable noise (including loud music), or using offensive words or insults likely to incite violence. Er, no. > larceny Seriously? No good made it past the checkout counter. > harassment maybe. This only comes into play after repeated unwanted communication, (with some extension based on treatment of protected classes). If (as indeed suggested) people did this multiple times, this might be plausible. > conspiracy Only comes into play if there is an underlying illegality. > Under RICO, a person who is a member of an enterprise that has committed any two of 35 crimes—27 federal crimes and 8 state crimes—within a 10-year period can be charged with racketeering Uh, no. > seem to think that the law is a finite state machine, It's obviously not, and I agree this is a problem. A series of legal actions can completely be a crime in the right context, and the courts and officers of the law consider such things. But here you've really given little to hang a criminal charge on.